PS Express : No tools appears in Landscape mode

I have Wacom Cintiq Companion Hybrid 32GB (v1.04.006) with Android OS 4.2.1 Jelly Bean, and when I'm open the Photoshop Express (ver 2.4.509) and open one of my photo in Landscape mode, I cannot see any of the tools available until I rotate the device to portrait, and it's gone again when I rotate back to landscape. Any ideas what can I do with it? Thank you in advance.